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Analisis Emisi Gas Buang (CO, CO2 dan HC) pada Sepeda Motor FI dengan Variasi Saat Pengapian, Saat Penginjeksian dan Jenis Bahan Bakar M. Sadly Firmansyah; Wawan Purwanto; Hasan Maksum; Ahmad Arif; M. Yasep Setiawan
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 1 No. 2 (2023): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Penelitian ini membahas tentang perubahan nilai kadar CO, CO2 dan HC yang dihasilkan emisi gas buang padaÂ sepeda motor FI dengan penggunaan ECU Programmable (4 variasi perlakuan saat pengapian dan saat penginjeksian) menggunakan 3 jenis bahan bakar di setiap perlakuan . Tujuan penelitian ini adalah mengetahui seberapa besar perubahan penggunaan ECU Programmable di setiap perlakuan terhadap emisi gas buang yang dihasilkan oleh objek penelitian. Jenis penelitian ini adalah penelitian eksperimen. Objek penelitian ini adalah sepeda motor FI. Kadar CO dan HC terendah yang dihasilkan sepeda motor FI dengan penggunaan ECU Programmable diperoleh pada perlakuan saat pengapian 7Â°BTDC dan saat penginjeksian 350Â°ATDC menggunakan bahan bakar Gasohol E30. Kadar CO2 terendah diperoleh pada perlakuan saat pengapian 3Â°BTDC dan saat penginjeksian 350Â°ATDC menggunakan bahan bakar Pertamax Turbo, dimana hasil yang diperoleh menunjukan perubahan yang signifikan setelah melalui uji banding menggunakan uji T dengan taraf signifikan 5%. This study discusses changes in the value of CO, CO2 and HC levels of exhaust emission on FI Motorcycle with the use ECU Programmable (4 variation of ignition timing and injector timing) and use 3 variations fuel in every treatment. The purpose of this study was to determine how much influence the use ECU Programmable and variation of fuel on exhaust emissions produced by the research object. This type of research is experimental research. The object of this research is the FI Motorcycle. The lowest CO and HC level produced by FI Motorcycle with the use of a Programmable ECU is obtained in the treatment at ignition timing of 7Â°BTDC and injector timing 350Â°ATDC using Gasohol E30 fuel, while the lowest CO2 level is obtained at the ignition timing treatment of 3Â°BTDC and when injector timing 350Â°ATDC uses Pertamax Turbo fuel, where the results obtained show significant changes after going through a comparative test using the T test with a significant level of 5%.

Pengaruh Penggunaan Quizizz Terhadap Minat Belajar Siswa Kelas XI TKR Pada Mata Pelajaran Perawatan Berkala Kendaraan Ringan Maisa Dinata, Veru; Dani Saputra, Hendra; Wagino; Nanda, Iffarial; Baharudin, Agus; Firmansyah, M. Sadly; Yuliady, Ilham Yuliady; Zulfadli
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 3 No. 2 (2025): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v3i2.276

Pemanfaatan teknologi informasi dan komunikasi melalui platform interaktif seperti Quizizz diharapkan dapat meningkatkan kualitas pembelajaran. Namun, pada kelas XI TKR SMKN 8 Tebo, pembelajaran PBKR masih menerapkan metode konvensional, Penelitian ini bertujuan untuk menginvestigasi dampak pemanfaatan Quizizz terhadap ketertarikan dan pencapaian akademik siswa. Penelitian ini melibatkan 58 siswa yang terbagi menjadi dua kelompok, yaitu kelompok percobaan dan kelompok yang tidak diberi perlakuan. Data dikumpulkan melalui pelaksanaan pre-test dan post-test, serta kuesioner yang mengukur minat belajar. Hasil uji t menunjukkan bahwa tidak terdapat perbedaan signifikan pada pre-test (t = 1.122; p = 0.267), namun terdapat perbedaan signifikan pada post-test (t = 11.84; p < 0.05), di mana kelompok percobaan menunjukkan peningkatan yang signifikan. Penggunaan Quizizz terbukti efektif dalam membantu memperbaiki pencapaian belajar dan minat siswa. The use of information and communication technology through interactive platforms such as Quizizz is expected to improve the quality of learning. However, in the XI TKR class at SMKN 8 Tebo, the PBKR learning still applies conventional methods. This study aims to investigate the impact of using Quizizz on student engagement and academic achievement. The study involved 58 students, divided into two groups: the experimental group and the control group. Data were collected through pre-test and post-test assessments, as well as a questionnaire measuring learning interest. The t-test results showed no significant difference in the pre-test (t = 1.122; p = 0.267), but a significant difference in the post-test (t = 11.84; p < 0.05), with the experimental group showing a significant improvement. The use of Quizizz proved effective in enhancing student learning achievement and interest.

Enhancing heavy equipment engineering students' skills through hydraulic and pneumatic systems training at SMKN 1 Sungai Limau Wagino Wagino; Nuzul Hidayat; Hendra Dani Saputra; Agus Baharudin; Rahmat Desman Koto; M. Sadly Firmansyah; Akmal Akmal; Herwin Herwin
Community Empowerment Vol 9 No 10 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.12125

In the era of globalization, proficient technical skills are essential, especially in the field of heavy equipment engineering which requires an understanding of hydraulic and pneumatic systems. SMKN 1 Sungai Limau faces the challenge of limited facilities in preparing students for the demands of this industry. This training program utilizes a Problem-Based Learning method for theory and Project-Based Learning for practical application. Before the training commenced, students underwent a pretest with an average score of 45, indicating a low initial understanding. Following the theoretical and hands-on practical sessions, the posttest results showed a significant improvement with an average score of 70, reflecting an increase in student comprehension and skills. This average increase of 25 points serves as concrete evidence that this training is effective in enhancing students' skills in hydraulic and pneumatic systems. However, improvements in facilities and collaboration with industry are needed to ensure the relevance and sustainability of this training.

Enhancing Learning Outcomes through Kahoot! - Based Educational Games in Engine and Heavy Equipment Courses for Phase F Heavy Equipment Engineering Students Ananda, Enjela Dwi; Ambiyar; Mahesi Agni Zaus; Sadly Firmansyah
Jurnal Vokasi Teknik Informatika Vol 5 No 1 (2025)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/javit.v5i1.218

This study investigates the effect of the Kahoot! educational game on student learning outcomes in the Engine and Heavy Equipment Unit course for Phase F students at SMK Muhammadiyah 1 Pekanbaru. A quasi-experimental design with equivalent control and experimental groups (n=18 each) was employed. Data were analyzed using normality and homogeneity tests, confirming suitability for parametric testing. Hypothesis testing using an independent t-test revealed a significant improvement in the experimental group’s mean post-test score (80.3) compared to the control group (74.2), with t (34) = 3.618, p < 0.05. The pre-test scores showed no significant difference between groups, ensuring comparability. These findings demonstrate that Kahoot! as an interactive gamified learning tool effectively enhances student engagement and academic performance in vocational engineering education. This study contributes novel empirical evidence supporting the integration of gamification in technical skill development, addressing a research gap in vocational ICT-based pedagogy.

Studi Faktor-Faktor Penghambat Penyelesaian Tugas Akhir Pada Mahasiswa Departemen Teknik Otomotif Azwardi; Wagino; Sugiarto, Toto; Muslim; Firmansyah, M. Sadly
JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia Vol. 3 No. 2 (2025): JTPVI: Jurnal Teknologi dan Pendidikan Vokasi Indonesia
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtpvi.v3i2.251

Tujuan dari penelitian untuk mengidentifikasi faktor internal dan eksternal, yang menghambat mahasiswa Departemen Teknik Otomotif Universitas Negeri Padang untuk menyelesaikan tugas akhir dan skripsi pada tahun masuk 2019 dan 2020. Penelitian ini adalah survei kuantitatif. Menggunakan kuesioner/angket. Sampel penelitian ini terdiri dari 54 siswa yang masuk tahun akademik 2019 dan 2020. Data dikumpulkan melalui angket yang memiliki pilihan jawaban berskala Likert. Analisis deskriptif digunakan dalam penelitian. Hasil penelitian yang telah diperoleh, Tingkat Capaian Responden pada faktor internal yaitu variabel Kesehatan sebesar 72.69% dan variabel Tugas Akhir sebesar 70.93% memiliki pengaruh besar terhadap penghambat menyelesaikan tugas akhir dan skripsi mahasiswa Departement Teknik Otomotif Universitas Negeri Padang. The purpose of the study was to identify internal and external factors that hinder students of the Automotive Engineering Department, Padang State University from completing their final assignments and theses in the academic years of 2019 and 2020. This study was a quantitative survey. Using a questionnaire. The sample of this study consisted of 54 students who entered the academic years of 2019 and 2020. Data were collected through a questionnaire that had Likert-scale answer choices. Descriptive analysis was used in the study. The results of the study that have been obtained, the Respondent Achievement Level on internal factors, namely the Health variable of 72.69% and the Final Assignment variable of 70.93% have a major influence on inhibiting the completion of the final assignment and thesis of students of the Automotive Engineering Department, Universitas Negeri Padang.

Enhancing industrial competency: Bulldozer operation training as a strategy for youth empowerment in Rantih Village, Sawahlunto Nasution, Ichsan; Febriansyah, Ilham; Wisesa, Budi Utomo; Zulfadli, Zulfadli; Yuliady, Ilham; Rahmadani, Rahmadani; Firmansyah, M. Sadly
Community Empowerment Vol. 11 No. 1 (2026)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.15436

This community service activity aims to improve the technical skills of young people in Rantih Village, Talawi District, Sawahlunto City in operating bulldozer heavy equipment. The main problem in this village is the high unemployment rate due to low technical skills and limited access to job training that meets industry needs. The training program was carried out through a one-day theoretical and practical field learning method involving 10 participants. The activity was facilitated by lecturers and industry practitioners who are certified heavy equipment operators. The training results showed a significant improvement in the participants' knowledge and skills, particularly in the areas of basic operation, equipment maintenance, and work safety implementation, by 82%. Additionally, this activity successfully built a partnership network between universities, village governments, and the industrial world. This program is expected to continue on an ongoing basis as a form of youth empowerment towards economic independence.

Enhancing Learning Outcomes through Kahoot! - Based Educational Games in Engine and Heavy Equipment Courses for Phase F Heavy Equipment Engineering Students Enjela Dwi Ananda; Ambiyar; Mahesi Agni Zaus; Sadly Firmansyah
Jurnal Vokasi Teknik Informatika Vol 5 No 1 (2025)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/javit.v5i1.218

This study investigates the effect of the Kahoot! educational game on student learning outcomes in the Engine and Heavy Equipment Unit course for Phase F students at SMK Muhammadiyah 1 Pekanbaru. A quasi-experimental design with equivalent control and experimental groups (n=18 each) was employed. Data were analyzed using normality and homogeneity tests, confirming suitability for parametric testing. Hypothesis testing using an independent t-test revealed a significant improvement in the experimental group’s mean post-test score (80.3) compared to the control group (74.2), with t (34) = 3.618, p < 0.05. The pre-test scores showed no significant difference between groups, ensuring comparability. These findings demonstrate that Kahoot! as an interactive gamified learning tool effectively enhances student engagement and academic performance in vocational engineering education. This study contributes novel empirical evidence supporting the integration of gamification in technical skill development, addressing a research gap in vocational ICT-based pedagogy.

Vehicle-Based Evaluation of 12-V SLI Battery Cranking Performance under Ambient Cold-Start and Hot-Start Conditions Ichsan Nasution; M. Sadly Firmansyah; M. Yasep Setiawan; Yuli mafendro dedet eka saputra; Budi Utomo Wisesa; Ilham Febriansyah
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 8 No 1 (2026): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v8i1.544

Reliable engine starting in conventional vehicles depends on the SLI battery’s ability to deliver high cranking current while maintaining voltage under load. This study evaluated a 12-V maintenance-free lead-acid SLI battery rated at 450 A CCA under practical ambient cold-start (20–30 °C) and hot-start (85–105 °C) conditions. Testing was conducted over four consecutive days using measured CCA, CCA ratio, minimum cranking voltage, open-circuit voltage (OCV), and starter duration. The tested battery showed generally better cranking indicators under the hot-start condition, with higher measured CCA, higher CCA ratio, slightly higher minimum cranking voltage, and shorter average starter duration. OCV remained stable at approximately 12.5–12.6 V, indicating that the observed cranking differences were not mainly associated with major no-load voltage variation. The combined use of CCA, cranking voltage, OCV, and starter duration provides a practical diagnostic basis for evaluating SLI battery starting readiness.

Analisis Pengaruh Variasi Beban Penumpang Terhadap Kenaikan Temperatur Baterai LifePO4 72 V 100 Ah Pada Satu Rute Operasional Shuttle Bus Listrik UNP Muhammad Rif'at; Dwi Sudarno Putra; Wagino; Toto Sugiarto; M. Sadly Firmansyah; Dicky Rohid Fikra
MSI Transaction on Education Vol 6 No 4 (2025): MSI Transaction on Education
Publisher : Minangkabau Scholar Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/mted.v6i4.192

Penelitian ini bertujuan menganalisis pengaruh variasi beban penumpang terhadap kenaikan temperatur baterai Lithium Iron Phosphate (LiFePO₄) 72V 100Ah pada shuttle bus listrik Universitas Negeri Padang (UNP). Pengujian dilakukan menggunakan metode eksperimen lapangan dengan pemantauan temperatur melalui Battery Management System (BMS) pada rute sejauh 3,19 km dengan temperatur lingkungan awal 32°C. Variasi beban terdiri atas 3, 6, dan 11 penumpang. Hasil penelitian menunjukkan bahwa kenaikan temperatur baterai bertambah seiring meningkatnya beban, yaitu sebesar 1°C, 2°C, dan 4°C, dengan temperatur maksimum mencapai 36°C. Temperatur tersebut masih berada dalam rentang operasi optimal baterai LiFePO₄ (20–45°C), sehingga baterai memiliki performa termal yang di rekomendasikan untuk mendukung operasional shuttle bus listrik di lingkungan kampus. This study aims to analyze the effect of varying passenger loads on the temperature increase of This study aims to analyze the effect of passenger load variation on the temperature increase of a 72V 100Ah Lithium Iron Phosphate (LiFePO₄) battery in the UNP electric shuttle bus. The testing was conducted using a field experiment method with temperature monitoring through the Battery Management System (BMS) on a 3.19 km route, starting with an ambient temperature of 32°C. The load variations included 3, 6, and 11 passengers. The results showed that the battery temperature increased as the load increased, by 1°C, 2°C, and 4°C, with a maximum temperature reaching 36°C. This temperature is still within the optimal operating range for LiFePO₄ batteries (20–45°C), so the battery has the recommended thermal performance to support the operation of the electric shuttle bus on campus.

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